diff --git a/tv/tuner/1.0/default/Frontend.cpp b/tv/tuner/1.0/default/Frontend.cpp
index f42e592..8bf0ec5 100644
--- a/tv/tuner/1.0/default/Frontend.cpp
+++ b/tv/tuner/1.0/default/Frontend.cpp
@@ -66,7 +66,7 @@
 
     mTunerService->frontendStartTune(mId);
     mCallback->onEvent(FrontendEventType::LOCKED);
-    mIsLocked = false;
+    mIsLocked = true;
     return Result::SUCCESS;
 }
 
@@ -272,6 +272,10 @@
     return mType == FrontendType::DVBS || mType == FrontendType::ISDBS ||
            mType == FrontendType::ISDBS3;
 }
+
+bool Frontend::isLocked() {
+    return mIsLocked;
+}
 }  // namespace implementation
 }  // namespace V1_0
 }  // namespace tuner
diff --git a/tv/tuner/1.0/default/Frontend.h b/tv/tuner/1.0/default/Frontend.h
index c09b897..a529b74 100644
--- a/tv/tuner/1.0/default/Frontend.h
+++ b/tv/tuner/1.0/default/Frontend.h
@@ -68,6 +68,8 @@
 
     string getSourceFile();
 
+    bool isLocked();
+
   private:
     virtual ~Frontend();
     bool supportsSatellite();
diff --git a/tv/tuner/1.0/default/Tuner.cpp b/tv/tuner/1.0/default/Tuner.cpp
index ae8070c..48ce384 100644
--- a/tv/tuner/1.0/default/Tuner.cpp
+++ b/tv/tuner/1.0/default/Tuner.cpp
@@ -231,6 +231,9 @@
 
 void Tuner::setFrontendAsDemuxSource(uint32_t frontendId, uint32_t demuxId) {
     mFrontendToDemux[frontendId] = demuxId;
+    if (mFrontends[frontendId] != nullptr && mFrontends[frontendId]->isLocked()) {
+        mDemuxes[demuxId]->startFrontendInputLoop();
+    }
 }
 
 void Tuner::frontendStopTune(uint32_t frontendId) {